- 摘 要
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(1 同濟大學(xué)土木工程學(xué)院，上海 200092； 2 華東建筑設(shè)計研究院有限公司，上海 200002)
［摘要］提出了一種新的預(yù)應(yīng)力空間結(jié)構(gòu)體系—弦支骨架結(jié)構(gòu)，是由輻射狀布置的骨架結(jié)構(gòu)與一道或數(shù)道環(huán)向布置的弦支體系組成。利用弦支體系調(diào)整骨架部分的內(nèi)力分布，大大降低主梁最大彎矩的峰值，減小主梁的撓度；同時，弦支體系部分對底環(huán)梁產(chǎn)生壓力，與骨架部分對底環(huán)梁產(chǎn)生的拉力可以部分相抵消，大大降低了結(jié)構(gòu)體系對下部結(jié)構(gòu)的要求。采用參數(shù)分析法進行了應(yīng)力優(yōu)化。通過對弦支骨架結(jié)構(gòu)的受力特性包括抗震特性及整體穩(wěn)定性能的研究，驗證了弦支骨架結(jié)構(gòu)的可實現(xiàn)性。最后，提出了對弦支骨架結(jié)構(gòu)進一步研究的方向。
［關(guān)鍵詞］弦支骨架結(jié)構(gòu)；預(yù)應(yīng)力空間結(jié)構(gòu)體系；應(yīng)力優(yōu)化；參數(shù)分析
Cable-stayed skeleton structure-a new spatial prestressed structure
Wang Dasui1,2, Li Shi1,2 (1 College of Civil Engineering, Tongji University, Shanghai 200092, China; 2 East China Architectural Design & Research Institute Co., Ltd., Shanghai 200002, China)
Abstract:Cable-stayed skeleton structure is a new type of spatial prestressed structure, which consists of a series of radial beams and stayed cables beneath. Compared with the normal beams, the cable-stayed skeleton structure has much higher rigidity and lighter self-weight. Stress optimization is provided by parameter analysis. Modal analysis, spectrum analysis and global stability analysis are carried out to ensure the reliability of cable-stayed skeleton structure. Based on the studies above, the principle of cable-stayed skeleton structure is developed and further studies about cable-stayed skeleton structure are predicted.
Keywords:cable-stayed skeleton structure; spatial prestressed structure; stress optimization; parameter analysis
作者簡介：汪大綏，國家勘察設(shè)計大師，總工。
參考文獻
［1］劉錫良. 現(xiàn)代空間結(jié)構(gòu)［M］. 天津：天津大學(xué)出版社，2003.
［2］汪大綏，周建龍，李時. 上海鐵路南站鋼屋蓋結(jié)構(gòu)設(shè)計［J］. 土木工程學(xué)報，2006(5).
